Reorder xdg env for macos

macOS will ignore case when matching files. Put the caps letter for xdg
first then the lower case version for linux

dot_config/nushell/env.nu.tmpl

@@ -37,15 +37,15 @@ load-env {
     XDG_INCLUDE_HOME: (add_xdg XDG_INCLUDE_HOME .local/include)
     XDG_STATE_HOME: (add_xdg XDG_STATE_HOME .local/state)
 
-    XDG_DESKTOP_DIR: (add_xdg XDG_DESKTOP_DIR desktop Desktop)
-    XDG_DOCUMENTS_DIR: (add_xdg XDG_DOCUMENTS_DIR documents Documents)
-    XDG_DOWNLOAD_DIR: (add_xdg XDG_DOWNLOAD_DIR downloads Downloads)
-    XDG_MUSIC_DIR: (add_xdg XDG_MUSIC_DIR music Music)
-    XDG_PICTURES_DIR: (add_xdg XDG_PICTURES_DIR pictures Pictures)
-    XDG_PODCAST_DIR: (add_xdg XDG_PODCAST_DIR podcasts Podcasts)
-    XDG_PUBLICSHARE_DIR: (add_xdg XDG_PUBLICSHARE_DIR public Public)
-    XDG_TEMPLATES_DIR: (add_xdg XDG_TEMPLATES_DIR templates Templates)
-    XDG_VIDEOS_DIR: (add_xdg XDG_VIDEOS_DIR videos Videos)
+    XDG_DESKTOP_DIR: (add_xdg XDG_DESKTOP_DIR Desktop desktop)
+    XDG_DOCUMENTS_DIR: (add_xdg XDG_DOCUMENTS_DIR Documents documents)
+    XDG_DOWNLOAD_DIR: (add_xdg XDG_DOWNLOAD_DIR Downloads downloads)
+    XDG_MUSIC_DIR: (add_xdg XDG_MUSIC_DIR Music music)
+    XDG_PICTURES_DIR: (add_xdg XDG_PICTURES_DIR Pictures pictures)
+    XDG_PODCAST_DIR: (add_xdg XDG_PODCAST_DIR Podcasts podcasts)
+    XDG_PUBLICSHARE_DIR: (add_xdg XDG_PUBLICSHARE_DIR Public public)
+    XDG_TEMPLATES_DIR: (add_xdg XDG_TEMPLATES_DIR Templates templates)
+    XDG_VIDEOS_DIR: (add_xdg XDG_VIDEOS_DIR Videos videos)
 }
 
 load-env {